Nqe lus piav qhia: Erbium-doped fiber ntau AmplifierEDFA Optical Amplifier
Erbium-doped optical fiber ntau amplifier (EDFA, uas yog, lub teeb liab optical amplifier nrog Er3 + doped nyob rau hauv cov tub ntxhais fiber ntau los ntawm lub teeb liab) yog thawj optical amplifier tsim los ntawm University of Southampton nyob rau hauv 1985, thiab nws yog ib tug loj tshaj inventions nyob rau hauv optical fiber kev sib txuas lus. Erbium-doped fiber yog ib hom fiber ntau nrog me me ntawm lub ntiaj teb tsis tshua muaj erbium (Er) ions nyob rau hauv quartz fiber, uas yog lub hauv paus ntawmErbium-doped fiber ntau amplifier. Txij li thaum xyoo 1980s lig, kev ua haujlwm loj tau ua rau hauv kev tshawb fawb ntawm erbium-doped fiber ntau amplifiers. WDM thev naus laus zis tau ua kom muaj peev xwm ntawm kev sib txuas lus kho qhov muag fiber ntau. Nws yog qhov feem ntau siv optical amplifier hauv kev sib txuas lus fiber ntau.
Daim ntawv thov: Optical fiber amplifier yog ib qho khoom siv kho qhov muag uas ua kom pom tseeb ntawm cov teeb liab kho qhov muag hauv kev sib txuas lus kho qhov muag fiber ntau. Hauv kev sib txuas lus siv cov khoom siv kho qhov muag, nws yog ib qho cuab yeej siv ncaj qha rau cov teeb liab kho qhov muag yam tsis hloov cov teeb liab kho qhov muag rau hauv cov teeb liab hluav taws xob. Erbium-doped fiber ntau amplifier (EDFA Optical Amplifier, uas yog, lub teeb liab optical amplifier nrog erbium ion Er3 + nyob rau hauv cov tub ntxhais fiber ntau los ntawm lub teeb liab) yog thawj optical amplifier tsim los ntawm University of Southampton nyob rau hauv lub tebchaws United Kingdom thiab Nyiv lub Tohoku University, nws yog ib tug ntawm cov loj tshaj inventions nyob rau hauv optical fiber kev sib txuas lus. Erbium-doped fiber ntau yog ib hom fiber ntau nrog me me ntawm lub ntiaj teb tsis tshua muaj erbium (Er) ions hauv quartz fiber, uas yog lub hauv paus ntawm Erbium-doped fiber ntau amplifier. Txij li thaum xyoo 1980s lig, kev ua haujlwm loj tau ua rau hauv kev tshawb fawb ntawm erbium-doped fiber ntau amplifiers. WDM thev naus laus zis tau ua kom muaj peev xwm ntawm kev sib txuas lus kho qhov muag fiber ntau. Nws yog qhov dav siv optical amplifier hauv kev sib txuas lus fiber ntau.
Basic parameter
Lo lus lub npe: Erbium-doped fiber amplifier
Hais txog lub sij hawm:Optical Amplifier
Quartz fiber ntau doped nrog lub ntiaj teb tsis tshua muaj cov ntsiab lus (xws li Nd, Er, Pr, Tm, thiab lwm yam) tuaj yeem tsim ntau theem laser system, thiab ncaj qha nthuav tawm lub teeb liab teeb liab nyob rau hauv qhov kev txiav txim ntawm lub teeb lub teeb. Tom qab muab cov lus qhia tsim nyog, fiber ntau laser yog tsim. Kev khiav hauj lwm wavelength ntawm ND-doped fiber ntau amplifier yog 1060nm thiab 1330nm, tab sis nws txoj kev loj hlob thiab daim ntawv thov raug txwv vim kev sib txawv ntawm qhov chaw nres nkoj zoo ntawm kev sib txuas lus fiber ntau thiab qee qhov laj thawj. Kev khiav hauj lwm wavelengths ntawm EDFA thiab PDFA yog nyob rau hauv qhov qis tshaj poob (1550nm) thiab xoom dispersion wavelength (1300nm) qhov rais ntawm optical fiber kev sib txuas lus feem, thiab TDFA ua hauj lwm nyob rau hauv lub S-band, uas yog heev haum rau optical fiber kev sib txuas lus system daim ntaub ntawv. Tshwj xeeb tshaj yog EDFA, txoj kev loj hlob sai tshaj plaws, tau ua tiav.
Raws li kev txhim kho ntawm erbium-doped fiber ntau, ntau lub tshuab hluav taws xob tshiab txuas ntxiv mus. Piv txwv li, dual-band fiber ntau amplifier (DBFA) raws li erbium-doped fiber ntau yog broadband optical amplifier, thiab broadband tuaj yeem npog yuav luag tag nrho cov wavelength division multiplexing (WDM) bandwidth. Ib yam khoom zoo sib xws yog ultra-wideband optical amplifier (UWOA), uas muaj cov kev pab cuam bandwidth kom nthuav dav txog 100 wavelength channels hauv ib fiber ntau.
Kev siv tswv yim
Daim ntawv thov ntawm Erbium-doped fiber ntau amplifier (EDFA Amplifier) hauv cov qauv siv hluav taws xob fiber ntau digital kev sib txuas lus tuaj yeem txuag tau ntau ntawm optical Repeaters, thiab qhov kev ncua deb tau nce zoo heev, uas yog qhov tseem ceeb rau kev ua haujlwm ntev cable lub cev.
Nws cov ntawv thov tseem ceeb suav nrog:
1, tuaj yeem siv ua lub teeb nyob deb amplifier. Ib txwm siv hluav taws xob fiber ntau optic Repeaters muaj ntau yam kev txwv. Piv txwv li, thaum lub teeb liab digital thiab cov teeb liab analog tau hloov mus rau ib leeg, tus repeater yuav tsum tau hloov raws li; Thaum cov cuab yeej hloov pauv los ntawm kev ceev qis mus rau kev kub ceev, lub repeater yuav tsum tau hloov raws li. Tsuas yog xa tib lub wavelength ntawm lub teeb liab, thiab cov qauv yog complex, kim, thiab lwm yam. Erbium-doped fiber amplifiers kov yeej cov teeb meem no, tsis tsuas yog lawv tsis tas yuav hloov nrog kev hloov ntawm cov teeb liab hom, tab sis kuj tsis tas yuav tsum tau hloov thaum cov cuab yeej nthuav dav lossis siv rau optical wavelength division multiplexing.
2, tuaj yeem siv ua optical transmitter post amplifier thiab optical receiver preamplifier. Raws li tus ncej amplifier ntawm optical transmitter, lub zog xa hluav taws xob ntawm lub laser tuaj yeem nce los ntawm 0db txog +10db. Thaum siv los ua preamplifier ntawm optical receiver, nws rhiab heev kuj tuaj yeem txhim kho tau zoo. Yog li ntawd, tsuas yog 1-2 erbium-doped amplifiers tau teem rau ntawm kab, thiab lub teeb liab kis tau tus mob yuav nce los ntawm 100-200km.
Tsis tas li ntawd, erbium-doped fiber ntau amplifier (EDFA Amplifier) daws qhov teeb meem. Qhov tshwj xeeb zoo ntawm Erbium-doped fiber ntau amplifiers tau lees paub los ntawm lub ntiaj teb, thiab tau siv ntau thiab ntau dua. Txawm li cas los xij, Erbium-doped fiber ntau amplifiers kuj muaj qee qhov kev txwv. Piv txwv li, nyob rau hauv kev sib txuas lus mus ntev tsis tuaj yeem nce thiab nqis, qhov chaw nres tsheb kev sib cuag tau yooj yim dua, tsis yooj yim rau kev pom qhov yuam kev, lub twj tso kua mis lub teeb lub neej tsis ntev, nrog kev nce qib ntawm kev sib txuas lus fiber ntau optical, cov teeb meem no yuav daws tau zoo.
Post lub sij hawm: Mar-14-2025